Cita APA (7th ed.)

HUMPHREYS , K. (1991). JELENS COST AND OPTIMIZATION ENGINEERING. MCGRAW HILL.

Cita Chicago (17th ed.)

HUMPHREYS , K.K. JELENS COST AND OPTIMIZATION ENGINEERING. NEW-YORK: MCGRAW HILL, 1991.

Cita MLA (9th ed.)

HUMPHREYS , K.K. JELENS COST AND OPTIMIZATION ENGINEERING. MCGRAW HILL, 1991.

Atenció: Aquestes cites poden no estar 100% correctes.